Verified Answer :

0.085/ ( 510^2) 3 = ??
= 0.085 / (5
100) 3
= 0.085 / 500  *  3
= 0.085 / 1500
=0.00051

Let us solve this

0.085 ÷ (5 10^2)3 = ?
0.085 ÷ (5
100)3 = ?
0.085 ÷ (500)3 = ?
0.00017 3 = .
0.00051

0.085 ÷ (5
10^2)3 = 0.00051.